Fix README.
Fix README.

joshuairl/cordova-plugin-iosrtc,contra/cordova-plugin-iosrtc,midjuly/cordova-plugin-iosrtc,markharding/cordova-plugin-iosrtc,contra/cordova-plugin-iosrtc,mccob/cordova-plugin-iosrtc,saghul/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,yogomi/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,markharding/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,mccob/cordova-plugin-iosrtc,midjuly/cordova-plugin-iosrtc,joshuairl/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,BasqueVoIPMafia/cordova-plugin-iosrtc,hit0907/cordova-plugin-iosrtc,midjuly/cordova-plugin-iosrtc,contra/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,mccob/cordova-plugin-iosrtc,yogomi/cordova-plugin-iosrtc,joshuairl/cordova-plugin-iosrtc,yogomi/cordova-plugin-iosrtc,markharding/cordova-plugin-iosrtc,saghul/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,eface2face/cordova-plugin-iosrtc,saghul/cordova-plugin-iosrtc